MT2 to the Rescue -- Searching for Sleptons in Compressed Spectra at the LHC

Understand

We propose a novel method for probing sleptons in compressed spectra at hadron colliders.

• The process under study is slepton pair production in R-parity conserving supersymmetry, where the slepton decays to a neutralino LSP of mass close to the slepton mass.
• In order to pass the trigger and obtain large missing energy, an energetic mono-jet is required.
• Both leptons need to be detected in order to suppress large standard model backgrounds with one charged lepton.